Structure Block Found in Underground Pyramid

Hello! my minecraft username is HumanoidThing, and I found a structure block spawning where it wasn’t really supposed to. Within the desert caves there is an undergound pyramid version of the obove ground pyramid; which is where I found a structure block. One of the spots in which packed sand drops you into a pit had a structure block and no scarabs, which leads me to assume that it failed to spawn the scarabs in using the structure block. Anyways, I love the server and I really hope I can help you guys!